package com.example.logicalthinking.broadcastbestpracice;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.widget.Toast;

public class MdatabaseHelper extends SQLiteOpenHelper {
    public static final String CREATE_BOOK = "create table Book ( "
            + "id integer primary key autoincrement, "
            + "author text, "
            + "price real, "
            + "pages integer,"
            + "name text)" ;
    public static final String CREATE_CATEGORY = "create table Category ("
            +"id integer primary key autoincrement,"
            +"name text,"
            +"code integer )";

    private Context mContext;

    public MdatabaseHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version){
        super(context, name, factory, version);
        mContext = context;
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_BOOK);
        db.execSQL(CREATE_CATEGORY);
        // 跨程序访问时不能使用Toast
//        Toast.makeText(mContext, "Create successed", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("drop table if exists Book");
        db.execSQL("drop table if exists Category");
        onCreate(db);

    }
}
